Table 1 

Effects of logtransformed water volume and leaf litter mass on relative abundances of treehole insects 

Species 
N 
R^{2} 
F 
P_{F} 
Parameter 
Coefficient 
SE 
t 
P_{t} 


A. triseriatus 
233 
0.041 
6.00 
0.003 
Water vol 
0.22 
0.10 
2.19 
0.03 
Leaf mass 
0.042 
0.03 
1.33 
0.18 



T. rutilus 
89 
0.028 
2.27 
0.11 
Water vol 
0.51 
0.32 
1.57 
0.12 
Leaf mass 
0.21 
0.11 
1.97 
0.052 



C. guttipennis 
202 
0.32 
48.52 
0.0001 
Water vol 
1.35 
0.21 
6.30 
<0.001 
Leaf mass 
0.22 
0.06 
3.98 
<0.001 



H. pulchella 
160 
0.088 
8.70 
0.004 
Water vol 
0.63 
0.26 
2.44 
0.016 
Leaf mass 
0.11 
0.073 
1.52 
0.13 



M. posticata 
45 
0.14 
4.43 
0.019 
Water vol 
0.54 
0.36 
1.51 
0.14 
Leaf mass 
0.22 
0.11 
1.92 
0.06 



T. albipunctatus 
98 
0.078 
5.09 
0.008 
Water vol 
0.25 
0.34 
0.74 
0.46 
Leaf mass 
0.29 
0.10 
2.84 
0.005 



Systenus sp. 
21 
0.51 
11.39 
0.007 
Water vol 
1.22 
0.45 
2.69 
0.015 
Leaf mass 
0.44 
0.15 
2.97 
0.01 



Results of randomization regressions on inversetransformed relative abundances vs. the logtransformed water volume and leaf litter mass. N = sample size, R^{2 }= proportion of variation explained by the model, F = regression model test statistic, P_{F }= probability value associated with F statistic, SE = standard error of the coefficient estimate, t = test statistic for coefficient, P_{t }= probability associated with tstatistic. Yintercepts not shown, but all were significantly greater than zero (P < 0.001). Aedes triseriatus relative abundances were not transformed, as transformation did not improve linearity. 

Paradise et al. BMC Ecology 2008 8:22 doi:10.1186/14726785822 